Road-building machine



YMarch 18 1924.

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L. A. GARDINER ROAD BUILDING MACHINE Filed March 3, 1922 '7 Sheets-Sheet'7 Patented Mar. 18, 1924.

UNITED STATES 'LINZIE A.. GARDINER, 0F DRY RIDGE, KENTUCKY.

RUM-BUILDING- MACHINE.

Application led March 3, 1922. SeriaLNo. 540,676.

To all whom t may concern:

Be it known that I, LINzInA. GARDINER, a citizen of the United States,residing at Dry Ridge, inthe county of Grant and State of Kentucky, haveinvented certain new and useful Improvements in Road- Building Machines,of whichA the following is a full, clear, and exact description.

' My invention relates to machines for building or resurfacing roads,and. has for its object to provide such a device with a stone crusherand a self-feeder, whereby the stones are readily reduced to the propersize.

A further object'of the invention is the use of a screen for separatingthe crushed stone of the desired size from the smaller stones, and alsotogprovide means for con veying the smaller stones or screenings to theside of the-road, and other means for carrying the larger stones to therear of the machine.

Another object of the invention is the provision of a spreader drawn bythe apparatus and into which the stone is fed; the spreader beingvertically adjustable so that the stone ma be laid to the requireddepth.

ther objects and advantages of the invention will be apparent from thefollowing description when taken in connection with the accompanyingdrawing, in which:

Figure 1 is a side elevation of the machine in operation. v l I Figure 2is an enlarged vertical section through the machine.

Figure 3 is a front end view of the machine.

Figure 4 is a fragmentar plan view of the machine, showing detai s ofthe stone crusher.

Fi ures 5 and 6 are perspective views of detai s of the stone crusher.

'Figure 7 is a section through the auxiliary stone crusher.

Figure 8 is a fragmentary rear view of the machine, showing the, meansfor conveying the screenings to the side of the road.

Figure `9 is a detail plan viewof the ady justable chute for thescreenings.

Figure 10 is a detail side elevation of means for adjusting the chuteshown in Figures 8 and 9.

Figure 11 is a fragmentary side elevation of a conveyer and spout.

Figure 12 is a rear view of the apparatus partly in section.

Figure 13 is a fragmentary sectional view through one end of the screen.

Figure 14 is a detail view of a' clutch mechanism. Y

Figure ,15 is a side elevation of the screen detached from the machine,and showing its different positions in dotted lines.

Figure 16 is a section through the screen. Figures 17 and 18 are detailviews of means for adjusting the screen.

Figure 19 is a side elevation of a spreader used in connection with thestone crusher.

Figure 20 is a plan view of the spreader. Figure 21 is a longitudinalsection through the spreader.

Figure 22 isa transverse section taken on line 22-22, Figure 20, and

Figure 23 is a transverse section taken on line 23-23, Figure 20.

Referring to the drawing more in detail, the numeral lfdesignates thetractor to which is attached the spreader 2 by means of the cable 3.

Mounted on the forward end of the tractor 1 is a stone crusher whichcomprises a pair of jaws 4 and 5, the jaw 4 being rendered adjustable bymeans of the wedgeshaped member 6, slotted plate 6", and screw 7. Thejaw 5 is pivotally mounted at 8,.and is oscillated on its pivotl bymeans of the eccentric rod 9 and eccentric 1()a on shaft 10. Just belowthe jaws 4 and 5 I have provided a shaft 11 on which is mounted thesteel sleeve 12 formed with the radially extending fingers 13. Thesleeve 12 is secured to the shaft 11 by means .of the key 14 andsetscrew 15, the pur ose of this shaft and fingers being to brea up anystones which are too small to be engaged by the jaws 4 and 5.

The stone to be crushed is loaded onto the self-feeder which comprises abelt 1,6 on which are mounted the cleats 17. The

- belt 16 is operated over the rollers 19. The

ings entirely out of register. radjust theI cylinders 31 and 32, Iemploy 31 and 32 are movable relatively in order to vary the amount bywhich the openings 33 and 34 overlap, or to move these open- In order toa `lever 35pivoted to the frame of the apparatus at 36, and having its formed end 37 provided with yrollers 38wh1chengage a. flange 39von theouter cylinder 32. A latch 40 is carried by the lever 35 to lock thescreen in its adjusted position. On the `interior of the screen isAlocated a shaft 41 'on which are mounted the propellers or agitators 42for agitating the stone delivered to the screen and. advancing the samealong the screen ,tothe rear of the machine. To

aid in-t-he movement of the stone along the threaded on the frame, asshown at 44and` isswivelly connected to the shaft 41. By

' means of the crank or wheel 45 the shaft 43v is operated to raise orlower the shaft 41,

vand likewise the screen which issupported on the shaft by the spiders46.

.fastening means. l Stones which aretoo Below the screen 30 is a trough50 which receives the `powdered stone escaping through the openings 33and 34 of the screen. Ascrew `conveyer 51 is mounted in the trough 50and movesrthe screenings to the rear end thereof, where they are re-`ceived in the buckets 52 on the endless chain 53,v which is operated bymeans of sprocket wheels 54 and 55 driven by sprocket 55a on the shaftof the screw conveyer 51. A hood 56 envelope, the upper'end of theconveyer and4 aids in directing the screenings into a chute 57. Thechute 57 is preferably rendered `extensibleby the use of two sections.

58 and `59, the latter beingr provided with a rack 60=and the formercarrying a pinion 61V in mesh with the rack.' The pimon 61.

is rotated by means of a crank 62 and is heldin the desired position bymeans of the pawl and ratchet 63 and 64. The conveyer 53 1s supportedfrom the frame of the machine by means of thearms 65 which are hinged at66 in order'that when moving the machine the conveyer `may be moved intoa substantially vertical position by swinging the upper end toward themachine and may be he din such position by the hook and eye 67 and 68,ork other suitable n n largetopass throu h the perforations 33 and 34pass through te `open end 70 of `the screen and gravitate to the bottomof chute `71, where they are picked upby the buckets of the conveyer 73and dropped intoahefpivod shuts-:74.

The conveyer 73 is operated by means of `the sprockets" 75,y the upper'end of the conveyer being enclosed by the hood 76 which is supportedfrom the main framework of the apparatus by means of the adjustable arms77.

The motive power for moving the machine and also for operating thevarious parts'of the mechanism consists of a motor 80 mounted onthe topof the framework of the machine and geared tothe wheels 8l by meansofchains 82 or other form of gearing. The self-feeder ,'16 is operatedfrom'the motor by means of thebclt 83 and pulley 19. Chain 84 transmitspower from the motor to the sprocket 84a and shaft. 11 which forms theauxiliary stone ciu'sher. A belt 85 is mountedon the pulley 86 on theshaft 10. Pulley 86 also transmits power tothe conveyer 73 by means ofthe sprocket wheel 816iiL and chain 87. Shaft 10, by means of the bevelgeais 90 and 91, operates the vertically extending shaft 92, which,through suitable worms'93-94 and worm wheels and 96operates the shaft98, which `is connected by the universal joint 99 with the yshaft 41,and also operates the sol 101 Ifor disconnecting the motor from the ivarious mechanisms. This clutch is operated by means of the `bell-cranklever 102 pivoted to the framework of the machine,'as shown at 103, andnormallyheld in operative position by the spring `104.

The spreader 2 which is drawn bythe vapparatus by means of the cable 3is a substantially rectangular member having each vof its sides formedof two members 110 and 111, adjustable vertically by means of the slotand bolt connection 112 and 113. The lower members 110r are provided`with metal runners 114 formed with inwardly extending anges 115. Thepurpose of the flanges 115 is to engage under the crushed stone andthereby hold the spreader down in its proper position. The rear end ofthe spreader is composed of two members 116 and 117 adjustably connectedby means of the slots 118 and bolts 119. By means ofthe adjustments justdescribed the stone may be laid to any depth desired and will be leveledof to the proper depth by means of the adjustable cross member 117. i

In operation, the screen 30 and spreader 2 are adjusted to the properpositions for the immediate work to be done. As the clutch is let inthe. various mechanisms will be put in operation, the stone which isloaded onto the self-feeder being carried to the Crusher, and thencethrouglithe screen 30.*"After passing through the screen the screenin sor finer vmaterial is carried to the side o the road by the buckets 52,While the larger stones are carried by the conveyer 73 and chute Tet tothe spreader 2, Whlch spreads the stone in a uniform layer to the depthfor which it is adjusted.

In accordance with the patent statutes, I'-

have described what I now believe to be the best embodiment of theinvention, but I do not wish to be understood thereby as limiting myselfo1' the scope of the invention, as many changes and modiications -may bemade without departing from the spirit of the invention; all such I .aimto include in the scope ot' the appended claims.

'hat I claim'as new and desire to secure by Letters Patent is:

l. A. road building machine including a vehicle, a stone crusher mountedthereon, a conveyor extending from the stone crusher to a point beyondthe body of the machine,

means for permitting vertical adjustment of one end of the conveyor, ascreen extending longitudinally of the vehicle and cooperating with saidstone Crusher and adapted to separate the material into two grades,means for raising and lowering one end of said screen, a spreader, meansfor conveying one grade of material into the spreader, and nieans forconveying the other grade of material to the side of the road.

2. A road building machine including a vehicle, a stone crushcr mountedthereon,

means for conveying stone to the crusher, a screen extendinglongitudinally of the vehicle and cooperating with said stone 'Crusherand adapted to separate the material into two grades, means for raisingand lowering one end of said screen, a spreader, means for conveying onegrade of material to the spreader, and means for conve ing 'the othergrade of material to the side o the rear end of the screen, means forconveying a portion of the screened material to the road, and othermeans for conveying an other portion of the screened material to oneside of the road.

4. A road building machine including a vehicle, a stone lcrusher mountedthereon, a screen extending longitudinally of the vehicle andcooperating with said stone Crusher and adapted to separate the materialinto two grades, means for raising and lowering one endof the screen, aconveyor projecting rearwardly from the vehicle, and a chute cooperatingwith said conveyor and `adapted to direct the conve ed material toselected positions on the rca bed.

LINZIE A.' GARDINER.

